Meaning of an electronic circuit will oscillate?

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SUMMARY

The Barkhausen stability criterion is essential for determining when an electronic circuit will oscillate independently, meaning it can sustain oscillations without an external signal, provided it is powered. An oscillator maintains a constant frequency output, relying solely on the circuit's inherent properties, such as component values. Feedback mechanisms within the circuit allow it to amplify the input while generating consistent oscillations. Understanding this criterion is crucial for designing circuits that function autonomously as oscillators.

PREREQUISITES
  • Understanding of the Barkhausen stability criterion
  • Knowledge of electronic oscillators and their functions
  • Familiarity with feedback mechanisms in circuits
  • Basic principles of circuit components and their values
NEXT STEPS
  • Research the Barkhausen stability criterion in detail
  • Explore different types of electronic oscillators, such as RC and LC oscillators
  • Study feedback systems in electronic circuits
  • Learn about the impact of component values on oscillation frequency
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Electronics engineers, circuit designers, and students studying electronic circuits who seek to understand the principles of oscillation and circuit stability.

amaresh92
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i wonder if anyone can tell me the meaning of "The Barkhausen stability criterion is a condition to determine when an electronic circuit will oscillate."
in this what is the meaning of an electronic circuit will oscillate?

thanks
 
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Well, that the circuit acts as an oscillator; i.e. sustains oscillations (usually sinusoidal) and without any external signal coming in (although the circuit will of course still need to be powered).
 


f95toli said:
Well, that the circuit acts as an oscillator; i.e. sustains oscillations (usually sinusoidal) and without any external signal coming in (although the circuit will of course still need to be powered).

i found that the oscillator means to maintain a constant frequency output,but my doubt is we are giving input which also has a constant frequency?then what's the use of this?
will you please elaborate your answer?
and as i read, i feel that in this circuit we are controlling the input by giving feedback to it and the amplifier still amplify the input to the same extent as before.is it true?
 


The criterion tells you when a circuit will oscillate on its own, without any external frequency. When the criteria is met it is enough to power the circuit from e.g. a battery and it will still give the same frequency out.

Moreover, the frequency of the oscillation will only depend on the properties of the circuit (i.e. component values etc).
 

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